def create_delete_op_chain(object, parent=(None, None)):
opChain = []
for (obj, parentType, parentId) in object.db_children(parent):
op = DBDelete(
id=-1,
what=obj.vtType,
objectId=obj.db_id,
parentObjType=parentType,
parentObjId=parentId,
)
opChain.append(op)
return opChain
def create_change_op_chain(old_obj, new_obj, parent=(None, None)):
opChain = []
new_obj = copy.copy(new_obj)
deletes = old_obj.db_children(parent)
deletes.pop()
for (obj, parentType, parentId) in deletes:
op = DBDelete(
id=-1,
what=obj.vtType,
objectId=obj.db_id,
parentObjType=parentType,
parentObjId=parentId,
)
opChain.append(op)
adds = new_obj.db_children(parent, True)
(obj, parentType, parentId) = adds.pop()
op = DBChange(
id=-1,
what=obj.vtType,
oldObjId=old_obj.db_id,
newObjId=obj.db_id,
parentObjType=parentType,
parentObjId=parentId,
data=new_obj,
)
opChain.append(op)
adds.reverse()
for (obj, parentType, parentId) in adds:
op = DBAdd(
id=-1,
what=obj.vtType,
objectId=obj.db_id,
parentObjType=parentType,
parentObjId=parentId,
data=obj,
)
return opChain
